Shut-off valve



March 21, 1939 l o KNOERZER 2,151,296

SHUT- OFF VALVE Filed Dec. 6, 1937 Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE SHUT- OFF VALVE Otto Knoerzer, Hammond, Ind., assignor to Champion Corporation, Hammond, Ind., a corporation of Indiana Application December 6, 1937, Serial No. 178,243

3 Claims. (Cl. 251-158) This invention relates to shut-off valves and main part or body of the pipe section and usually in its present form it has been designed more having on its extremity an inwardly turned flange particularly for use in connection with irriga- 9 forming with the wall of the bell, an annular tion pipes. channel in which is contained a rubber or other Irrigation pipes are usually made from light resilient gasket 10 generally U or V shaped in gauge sheet metal for the purpose of economy cross section and formed with annular lips that and lightness, and such pipes are formed in secbear respectively against the internal face of the tions with leak-proof joints and couplings bebell and against the external face of the adja- ,tween them whereby they may be quickly and cent pipe section and preserve a leak-proof joint 10 easily joined together into long lengths of pipe. therebetween. Obviously, other forms of water- 10 As an illustration of the joint used, reference tight joints may be provided between the adjamay be had to my prior Patent No. 2,066,088 cent pipe sections.

dated December 29, 1936, for improvements in The pipe sections are coupled together by lugs Irrigating pipes. 26 on one end of each pipe section and loops 2! The principal object of the present invention on the bell end of the section as in my prior pat- 15 is the provision of a simple, practical and highly cut above referred to.

efficient valve, formed as a part of or separate As is well understood, an irrigation pipe may from a pipe section. Irrigation pipes are made be run from a pump located adjacent a body or of several sizes and in some instances are as stream of water to a distant point, and branch large as six inches in diameter. Inasmuch as the pipes may run from the main pipe to other places, 20 pipes are formed of light gauge sheet metal, conand sprinklers or other water distributors may siderab-le difficulty has been encountered in the be attached to the main and other branch pipes; provision of a valve therefor that can hold against The valves may be interposed anywhere along high pressure and one that is not likely to get the pipe or its branches to control the flow of out of repair or become injured by reason of water and to shut it off from one or more of its 25 the rough usage to which pipes of this character branches or at any desired point along the length are subjected. Another object is to provide a of the main pipe.

simple and practical valve that will fulfill these Inasmuch as it is desirable not to restrict the requirements. maximum flow of water through the pipe when With these and other objects and advantages in the valves are open, I have found that the ideal 30 view, this invention consists in the several novel place for the location of the valves is in the bell features of construction, arrangement and comof any pipe which is to be equipped with a valve bination of parts hereinafter fully set forth and because the valve opening of the valve device claimed. may be made as large as the cross sectional The invention is clearly illustrated in the drawarea of the main pa y Of the p p 35 ing accompanying this specification in which: Welded or otherwise suitably fastened to the Fig. 1 is a central, longitudinal section through int nal fa f t bell W is qu y p sifragments of two irrigation pipe sections taken tioned a cross-wall !2 provided with an outlet at the joint between the two, and showing the opening 13 of the same cross sectional area as 4.0 application thereto of a valve embodying a simthat of the main body of the p p on. The

ple form of the present invention. entire edge portion of the cross-wall i2 is fas- Fig. 2' is a vertical, cross section taken on th tened to the bell wall and, when the outlet openline 2-2 of Fig. 1. ing l3 thereof is closed by the valve, it complete- Fig. 3 is a vertical, cross section taken on the y Shuts Off the flow through the p p beyond 5 line 33 of Fig. 1. the valve.

Fig. 4 is a detail, fragmental section taken on Desi ab y, the valve I 4 is in the form of a p the line 44 of Fig. 1. valve and seats upon that part of the cross-wall Referring to said drawing, the reference h l2 which surrounds the outlet opening it therein. acters 5, 5, designate fragments of two irrigaes y, the Valve is 001111305601 O a fiber or 59 tion pipe sections connected together by a leakother flexible valve disc l5 swingably fastened proof joint 7. The pipe sections are desirably along One e e portion t0 the Cross-Wall 52 as y formed from light gauge sheet metal suitably bolts and nuts II, a strip of metal H being prefformed into pipes. On one end of each pipe erably interposed between the fiber strip and the section is welded or otherwise suitably fastened heads of the bolts and providing a straight line a bell 8, which is of greater diameter than the along which the flexible valve disc l5 may bend 55 in opening and closing the outlet opening in the cross-wall. On both sides of the flexible valve disc are metal reenforcement discs l6, II, which are secured to the flexible disc by rivets or other fastening means IS. The disc I! is of somewhat less diameter than that of the outlet opening in the cross-wall and enters the opening when the valve is closed, and the disc or discs l6 are preferably of substantially the same diameter as that of the flexible valve disc. The flow through the pipe is in the direction of the arrow, a, in Fig. 1, and consequently the valve is capable of being opened by the water pressure against it. Means are provided for closing the valve and the simple means illustrated comprises a threaded stem 19 which is positioned to stand at right angles to the cross-wall l2 and to engage the valve l4 (when closed) at the center of the outlet opening and consequently at the center of the reenforcing discs. The threaded stem I9 is threadedly engaged with athreaded member such as a bronze nut 2i? stationarily held in a strap shackle 2| from which extends a sleeve, here shown as comprising a piece of pipe 22 that projects through a hole in the bell wall and extends into the interior of the bell and externally thereof as well. The sleeve provides a guide for the threaded stem i9. The strap forming the shackle 2| is bent up into rectangular form as is clearly seen in Fig. 4 to receive the nut 26, and said nut is held by said strap shackle against turning when the threaded stem is being manipulated. The strap shackle and sleeve 22 are welded together and are also welded to the bell wall so as to provide a rigid solid support for the threaded stem, and to further reenforce the parts a cross bar 2 l is welded to the strap shackle and sleeve and its ends are welded to the bell wall. The outer end of the sleeve is threaded for the reception of a packing nut 23 and set nut 23 and suitable packing material is interposed between the end of the sleeve and the end wall of the packing nut to guard against any leakage. Upon the outer end of the threaded stem is a handle 24, by means of which it may be manipulated. Desirably, the strap shackle has an open side through which the nut 26 may be inserted into it and when the threaded stem has been engaged with the nut, the latter is positively retained in its place in the strap. Pref erably, the walls of the strap shackle form a square recess for the reception of a square nut of substantially the same size as the recess whereby the nut is effectively held against turning therein,

The cross-wall 12, valve l4, stem l9 and associated parts are all located between the ends of the bell, which is made of sufficient length to accommodate these parts.

When the threaded stem is retracted, water pressure against the valve in the direction of the arrow, a, in Fig. 1 forces the valve off its seat on the cross-wall thereby uncovering the outlet opening and permitting the water to flow freely through the opening and through the remainder of the pipe to the next valve or outlet.

When necessary to close the valve, the attendant merely screws down the threaded stem until it fully seats the valve on the cross-wall, thereby effectively closing the outlet opening therethrough and shutting off the fiow of water beyond the valve.

It will be observed that when the threaded stem has been screwed down to fully close the valve, the end of the stem then engages upon the center point of the valve discs, thereby forcing the entire surrounding part of the fiber valve disc tightly upon its seat. It has been found in actual practice that, although the pressure against the valve may be very high, it requires but little efiort on the part of the attendant to close down the valve against the pressure.

I claim as new and desire to secure by Letters Patent:

1. In an irrigation pipe valve, a sheet metal valve casing having a water passage therethrough, a screw threaded valve stem for opening a swinging disclike valve therein, said stem projecting outwardly through the casing wall, a sleeve externally of the casing, in which said stem is guided, a nut formed of non-corrosive metal with which the threads of the valve stem are threadedly engaged, and means to receive the nut and hold the same against rotation, said last mentioned means being welded to the sleeve and casing wall, and the sleeve being welded to the casing wall.

2. In an irrigation pipe valve, a sheet metal valve casing having a water passage therethrough, a screw threaded valve stem for opening a swinging disclike valve therein, said stem projecting outwardly through the casing wall, a sleeve externally of the casing, in which said stem is guided, a nut formed of non-corrosive metal with which the threads of the valve stem are threadedly engaged, and a shackle in which the nut is held against rotation, the shackle, sleeve and casing Wall being welded together.

3. In an irrigation pipe valve, a sheet metal valve casing having a water passage therethrough, a screw threaded valve stem for opening a swinging disclike valve therein, said stem projecting outwardly through the casing wall, a sleeve externally of the casing, in which said stem is guided, a nut formed of non-corrosive metal with which the threads of the valve stem are threadedly engaged,,a shackle in which the nut is held against rotation, and a shackle holding bar, the shackle, bar, sleeveand casing being welded together.

' OTTO KNOERZER. 

